A 13-year-old was placed in handcuffs Thursday morning after he threatened to "shoot up" a Porterville school.

Tulare County sheriff's detectives responded to Alta Vista Elementary School, located at 2293 E.Crabtree Ave., around 9:30 a.m. after they received reports of a student threatening a school shooting.

Detectives questioned witnesses and the student was arrested and booked at Tulare County Juvenile Detention Facility.

The school serves students in preschool through 8th grade, according to its website.

Superintendent Robert Hudson said he is grateful for the deputies' quick response.

"We have procedures in place and everything worked well. There was never an imminent threat or danger at any point to staff or students," Hudson said. "Tulare County Sheriff's Department was stellar in their approach."

Just minutes before deputies responded to the threat at Alta Vista, Tulare Police officers were called to Tulare Western High School after an alarm was mistakenly triggered, causing fear of a gunman on campus.

Tulare Sgt. Jon Hamlin said the alert was pushed around 9 a.m., but an on-campus officer quickly let surrounding officers know the campus was safe and that there was no imminent threat.

The high school and surrounding schools were put on lockdown as a precaution.

"Tulare Police Department was great in keeping in contact with us," said Ira Porchia, Los Tulares Middle School principal. "It was a big joint effort."

Police said they are working closely with the school district to remedy this from happening again in the future.

Tulare County deputies have been called to investigate numerous school violence threats over the last year.

Since the start of the new school year, five Tulare County students have been arrested after threatening to harm classmates.

Looking into each case is something they take extremely seriously, said Ashley Ritchie, Tulare County Sheriff's Department spokeswoman.

"The Tulare County Sheriff’s Department has a zero tolerance for any threats of violence against schools," she said.

Anyone with more information regarding the investigation is urged to contact Detective Rick Morley via phone at 1-800-808-0488 or anonymously at tcso@tipnow.com or by text or voicemail at 725-4194.